feat: Bump ddtrace to 2.14 to fix a stealthy-require bug

[astuyve]

What does this PR do?

Fixes DataDog/serverless-plugin-datadog#294

Motivation

Testing Guidelines

Additional Notes

Types of Changes

• Bug fix
• New feature
• Breaking change
• Misc (docs, refactoring, dependency upgrade, etc.)

Check all that apply

• This PR's description is comprehensive
• This PR contains breaking changes that are documented in the description
• This PR introduces new APIs or parameters that are documented and unlikely to change in the foreseeable future
• This PR impacts documentation, and it has been updated (or a ticket has been logged)
• This PR's changes are covered by the automated tests
• This PR collects user input/sensitive content into Datadog
• This PR passes the integration tests (ask a Datadog member to run the tests)

[codecov-commenter]

Codecov Report

Merging #304 (3e7e5cd) into main (260e463) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #304   +/-   ##
=======================================
  Coverage   80.05%   80.05%           
=======================================
  Files          36       36           
  Lines        1715     1715           
  Branches      387      387           
=======================================
  Hits         1373     1373           
  Misses        290      290           
  Partials       52       52           

📣 We’re building smart automated test selection to slash your CI/CD build times. Learn more